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If f(x) = cos(logx), then f(x^2)f(y^2) -...

If `f(x) = cos(logx),` then `f(x^2)f(y^2) - 1/2 [f(x^2/y^2)+f(x^2y^2)]` has the value

A

`(1)/(2)`

B

`-1`

C

`-2`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
d
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